Extension electric-light fixture



A. F. HAMMERSMITH.

EXTENSION ELECTRIC LIGHT FIXTURE.

APPLICATION FILED AUG-6, 1918.

1, 1, PatentedSepf. 20,1921.

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A. F.- HAMMERS-MITH. EXTENSION ELECTRIC LIGHT FIXTURE.

APPLICATION FILED AUG-6, 1918.

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ALFRED r. rIAMMERsMIT'I or CHICAGO, ILLINOIS.

EXTENSION ELECTRIC-LIGHT .FIXTURE.

To all whom it/may concern:

; Be it known thatI, ALFRED -F. IIAMMER- sMrrII, a citizen of the United States, residing at Chicagofln the county ofCook and Stateyof Illinois, have invented certain new and useful Improvements in Extension Electric-Light Fixtures; and I dohe'reby de- Clare the followingtobe a :full, clear, and

exact description of the, invention, such as will enable others skilled in the art to which it appertains to make and .use the same."

This invention relates to an extension electric lamp fixture.

An object is to provide a novel and 'eflicient construction I having the advantages which will appear from the following description taken inv connection with accompanying drawings of one preferred embodi- In the drawings, H

Figure 1is a general side view of a fixture embodying the invention,

Fig. 2 is a detail view of the reel and connections,

Fig. 3 is an end view, A

Fig. 4 is a longitudinal section showing the reel in elevation.

Fig. 5 is a. detail end view of the casing showing the latch in the disengaged position,

a Fig. 6 is a detail sectional view showing the yielding contact between the, reel and the stationary bearing in whichit is removably mounted,

Fig. 7 is adetail ing posts, and Fig. 8 is a transverse sectional view on the plane indicated by the line 88.of Fig. 4.

Within a preferably cylindrical casing 10, having the heads 11 and '12, is mounted a reel 13 upon which are wound the Insulated feed wires 14 which extend outward through a guide slot 15 in the wall of the casing to the lamp socket 16, the edges of the material adjacent to said guide slot preferably being rounded or beaded as shown at '17 to minimize chafing action upon the insulation. I

The extremities of the feed Wires are prefview of one of the binderably connected by binding screws 18 or the equivalent thereof to terminals 19 and 20 whlch form elements of'the reel and are an insulating spacing block 21,

separated by of one of said termla threaded extension 22 nalsprojecting beyond the head 12 of thefitted with a crank 23 by which 7 casing being Specification of Letters Patent.

. Patented Sept. 20, 1921,

Application filed August 6, 1918.. SerialNo. 248,573.

the reel may be turned towind the feed Wire into the casing.

Secured within the casing and-adjacent to the heads thereof, being separated therefrom by spacing blocks or washers 24and secured in place by screws or bolts 25, or

the equivalent thereof, are hard rubber or other insulating disks 26 and 27, in the former of which isisupported a bearing 28.

for thereception of the rotary terminal 19,

while the insulating disk 27 is provided with hub 30 of the terminal20. The said terminals are thus insulated from each other and from the casing while the reel which embodies said terminals is freeto rotate in order to provide for the Windingof the' feed wires thereon. ,7 :,-Ga rried by. the casingiin anyconvenient [location are the binding posts 31 and "32,"-

each of which is providedwith a seat 33 for a service wire from the house system, said wire being secured in place by a binding screw 34, and a seat 35 with which cooperates a binding screw 36 for the reception of a cona bearing 29 within which is mounted the i nector 37 which extends from the binding I post through a suitable opening 38 in the casing, one of said connectors extending to and beingattached to the hub 30 ofthe terminal 20 and the other, being extended to and forming connection with the bearing 28, said connectors being conducted outside of the insulating disks 26and 27 or between theplanes of said disks and the heads of the cylinders or casing.

Secured to the reel exteriorly of the easing is a ratchet 39 of which the teeth are adapted to be engaged by a latch 40 pivotally mounted upon the adjacent head of the casing to lock the reel when the feed wire is housed or has been extended to the desired. length. 3

From the foregoing description it will be seen that the feed wire may ordinarily be retained in a housed and protected position within the casing but is free upon the release of the latch to be extended as may be desired, the connection'with the service system being preserved at any extension of the 'feed wire, and in order to insure the proper minal 19 for sliding terminal engagement with the surface of the said bearing. It Will be understood, however, that anymechanical equivalent of this arrangement may be substituted to the end that regardless of the position orextent of adjustment of the reel and therefore extension of the feed wire,

. a perfect connection may be maintained between the service wire and the lamp socket contact.

The convenience of an apparatus 'suchas described, in any of the relations suggested, Will be understood, it being obvious that when not in use the feed' wire may be reeled into-the casing which may be secured in a convenient position upon the wall'of the -room or apartment,.or, upon any-suitable convenient object adjacent tojwhich the light may be required. In use, the lamp may hangdirectly from the casing at the desired extension or the lamp socket may be arranged in any suitable auxiliary support as upon a desk or writing table 'or may be held in the hand while examining machiner or in giving signals or the like.

1 aving described the invention, I claim-:- An extension electric light fixture comprising a, stationary casing, azdrum, within said casingand composed of a central insulating member having reduced ends, and

drum end members mounted on said reduced ends, contact members employed to connect the end members with the central insulating member and serve as binding posts, said casing having a longitudinal slot, insulated feed wires connected with said binding postsand extendingthrough said slot to carry a lamp, aca'p bearing fitted over theouter extremity of one of said end-members, a threaded extension carried by the other end member of the drum and extended outwardly of the end of the -casing,tan operating crank mounted on the end of said threaded extension; means stationary sleeve bearing for the last mentioned end vmember, current conductlng wires threaded into said casing and con .nected With the bearlngsifor-the end members of the. drum,'said drum including head -for locking said drum-against rotation, a

In testimony whereof I aflix my signature T 

